Printing-press



A. ANDERSON. FRINTING PRESS.

APPLICATION FILED MAW 14, I920- Patented Oct. 25, 1921.

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APPLICATION FILED MAY 14, 1920.

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PRINTING PRESS.

APPLIQATION FILED MAY 14, 1920.

1,395,076, Patented Oct. 25, 1921.

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A TTOHNEYS A. ANDERSON.

PRINTING PRESS.

APPLICATION FILED MAYM, 1920.

1,395,07 Patented Oct. 25, 1921.

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wmvsss mmvm/a fllvofks ANDERSON 1% By O ATTORNEYS UNITED STATES PATENT OFFICE.

ANDERS ANDERSON, 0F DUNELLEN, NEW JERSEY.

PRINTING-PRESS.

Application filed May 14,

To all whom it may concern:

Be it known that I, ANnnRs ANDERSON, a

citizen of the United States. and a resident of Dunellen, in the county of Middlesex and State of New Jersey, have invented a new and Improved Printing-Press, of which the following is a full, clear, and exact description.

v The present invention relates to new and useful improvements in printing presses and it pertains more particularly to presses of the reciprocating bed type.

It is the primary object of the present invention to provide a new and improved mechanism for reciprocating the bed of a printing press of the above-mentioned type.

It is a further object of the present invention to so construct the mechanism that the bed is reciprocated by power which is supplied in a continuous rotary direction.

It is a still further object of the invention to so construct a device of this nature that the bed .of the press may be greatly re duced in height.

It is a still further object of the invention to so construct a device of this character that the lateral or transverse braces 0f the bed frame as commonly constructed do not have to be changed, therefore permitting of a structure which affords greater strength in a lateral direction to the press frame.

With' the above and other objects in view, reference is had to the accompanying drawings, in which Figure 1 is a longitudinal sectional view partly broken away of a printing press frame constructed in accordance with the present invention;

Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is a. vertical sectional view taken on the line 33 of Fig. 2;

Fig. 4 is a horizontal sectional view taken I on the line 44 of Fig. 1;

Fig. 5 is a top plan view partly broken away of the bed and bed frame, and the operating mechanism;

Fig. 6 is a bottom plan view of the traveling bed ofthe press, and I Figs. 7 to 12, inclusive, are vertical sectional views showing the positions of the several parts during the various steps of reversing the motion of the bed.

Referring more particularly to the drawings, the frame 15 comprises a plurality of longitudinally extending members, each of Specification of Letters Patent.

Patented Oct. 25, 1921. 1920. serial No. 381,368.

which is braced by means of vertical braces 16, and connected by means of transversely extending braces 17 at the end of the side frames and at a point intermediate their ends as indicated. Each of the side frames 1s provided in its upper edge with longitudinally extending grooves 18, and said grooves serve as the guide or support for the reciprocating bed 19 of the press. The bed 19 of the press is shown in Fig. 6, and it is provided on its bottom face with a pair of parallel racks 20 and 21, said racks being positioned alongside each other as shown. Offset with respect to the parallel racks 20 and 21, and arranged at each end of the bed 19, are short racks 22 and 23. These racks 20, 21, 22 and 23 may be formed integral with the under face of the bed, or they may be separately formed racks attached thereto in any desired manner.

Secured to one end of the power shaft 25 of the press, and occupying a position pref erably outside of one of the side frames 15, is a gear 26, connected-in any manner to the source of power, said gear forming the means by which the power shaft 25 is driven. Suitably secured to the inner end of the powershaft 25, is a long gear 27 adapted to rotate with the shaft 25.

' Suitably secured to the innerfaceof one of the side frames 15, is a bearing block 28, and said bearing block forms the means of support of the power shaft 25. Mounted in the bearing block 28 in such a manner as to rotate therein, is a sleeve 29, and eccentrically mounted on said sleeve 29, by means of the eccentric head 30, is a gear wheel 31.

Interposed between the eccentric head' 30 and the gear wheel 31, is a bushing plate 32, and said bushing plate 32 forms the means of support for the gear wheel 31. The reference character 33 designates a shaft carried by and eccentrically to the sleeve 29, and said shaft 33 is secured within the sleeve 29 by means of a plate 34 and a screw 35 on one end, and a gear 36 mounted upon the other end and lying outside of the heretofore mentioned gear 31. The gear 36 is adapted to mesh with the outer end of the long gear 27 and is driven thereby, it being understood that the bolt 35 is free to move with respect to the plate 34 to permit of a free rotation of the shaft 33.

The gear 36 is adapted to be driven in the opposite direction to the gear 36, and to provide rotary movement in the opposite direction for the gear 31, a gear 37 is interposed -between the inner end of the long gear'27 and the gear 31. By this mechanism, it will be apparent that as the gear 26 is driven, the gears 31 and 36 will be rotated in 0 posite directions to each other.

ounted in one of the side frames15, is a shaft 40, and carried by said shaft 40 and keyed thereto, is a gear wheel 41. This gear wheel 41 meshes with the gear 26 and receives its power therefrom. Mounted on the inner end of the shaft 40, is a gear wheel 42, and said gear wheel 42 is keyed or splined to the shaft 40 in order that it will rotate therewith upon rotation thereof under the influence of the gear 26.

Extending transversely of the press frame, is a shaft 43, and mounted on said shaft 43 and meshing with the gear wheel 42, is a gear wheel 44. This gear wheel 44 and the shaft 43 are adapted to be driven at a re duced speed by means of the ear wheel 42 heretofore mentioned. Carried by the shaft 43 and secured thereto by means of a pin or the like 45 is a cam 46 adapted to rotate between and in contact with two rollers 47 and 48. These two rollers 47 and 48 are carried by the lower end of a depending lever '49 the upper portion of which is offset as indicated by the reference character 50,

and is pivotally attached by means of a bearing 51 to a bolt or the like 52. This bolt 52 is carried by the plate 34 heretofore mentioned and said plate is in turn secured to theend of theccentric shaft 29 in such a manner that said eccentric shaft 29 will be oscillated in the bearing block 28 upon vertical movement of the lever 49. This vertical movement is imparted-to the lever 49 by means of the cam 46 alternately engagin the rollers 47 and 48 heretofore mentione The bed frame is provided on its side opposite to the driving shaft with a bracket 60, and said bracket is formed with a bearing 61. Mounted in the bearing 61 is a shaft 62, and mounted upon said shaft 62, is a rocker arm 63. This rocker arm 63 is provided in its upper end with a transverse shaft 64,

projecting upon opposite sides thereof, and

pivotally secured to one end of said shaft is a crank 65, the other end of which is pivotally connected as at 66, to the gear wheel 36, by means, of a bolt 67, as more clearly shown in Fig. 4.

Pivotally secured to the opposite side of the rocker arm 63, is a crank 68, said crank being pivotally connected to the shaft 64 of the rocker arm 63, as at 69. The other end of the crank 68 is pivotally secured as at 70, by means of a bolt '71, to the oscillating segment 72. This oscillating segment 72 is ivotally mounted in the bed. frame as at 3, and has a body portion 74 extending verti heyond e pivotal and i r it end body port I The operation of the device is as follows:

Assuming that the parts are in the position shown in Fig. 1 the teeth 76 of the segment 72 are in engagement with the teeth of the short rack 22. Upon rotation of the power gear 26. the gears 31 and 36 will be rotated in opposite directions as heretofore stated. This action through the medium of the link 65, operates the rocker arm 63, and through the medium of the link .68, will move the rocker arm.63 to the left in Fig. 1. This movement of the rocker arm 63 rocks the segment 72'about its pivotal point and starts a reciprocation of the bed 20.

Before the time, however, at which the teeth 76 of the segment 72 disengage the rack 22, the gear 31 will be elevated to a point where it w1ll be in engagement with the rack 21, and upon continued rotation of said gear, the bed will be reciprocated as shown in Fig. 7. As the gear 31 is further rotated through the medium of the idle gear 37, the bed will be reciprocated until the position shown in Figs. 9 and 10 is reached. -In this position, the gear 31 will be disengaged from the rack 20 and the teeth 76 of thesegment 72 will engage the short rack 23.

With the parts in this position, both of the gears 31 and 36 are so positioned as'to be isengaged from their respective racks.

As the segment72 starts to oscillate in the opposite direction, movement of the bed in the direction of the arrow shown in Fig. 1 is set up, this position of the'parts being shown in Fig. 9.

.As the bed moves in the direction indicated by the arrow in Fig. 10 under the action of the se ment 72, the segment reaches the extent of its movement to the left in Fi 10, and starts to move again'toward the rig t in said figure. This action moves the bedin the direction opposite to the arrow shown in Fig. 10, or as shown by the arrow in Fig. 11, and during the interval that the bed is being moved b the pivoted segment 7 2, the gear 36 is lifte into engagement with the rack 20 and begins to drive the bed to the right in said figure as the pivoted segment 72 passes out of engagement with the short rack 23. I

In order that the gears 31 and 36 may be elevated and lowered into and out of engagement with their respective racks, the

cam 44 heretofore mentioned en ages theelev as the gear 31 and lower the gear 36- when eam member 46 engages the upper roller 48. Inasmuch as this cam member is operated by means of the gears 42 and 44 from the gear wheel 41, which in turn is rotated by the power gear 26, it will be seen that if said gears are properly timed, they will alternately engage their respective racks at the proper time to continue the movement of the bed after the same has been reversed through the action of the pivoted segment 72.

From the foregoing it will be apparent that the present invention provides means whereby a reciprocating table, such asthe bed of a. printing press, may be positivelyoperated to'reciprocate, by means of a plurality of gears, which are alternately engaged with a plurality of racks carried by ing parallel one to the other and having their adjacent ends offset, a pair of short racks mounted in alinementlone with the other and offset with respect to the first mentioned racks a ower shaft arranged transversely of the" rame, a driving pinion carried upon the power shaft, a second shaft mounted in the frame and parallel to the) power shaft, a sleeve surrounding the second mentioned shaft and eccentric with respect thereto, a gear carried by said sleeve, an idle pinion engaging said gear and the pinion of gear, a gear carried by the second mentioned shaft and meshing with. the pinion of the power shaft and with one of the racks on the; under face of said bed and the gear carried by the sleeve adapted to mesh with the other of said racks, and means for alternately engaging said gears with their respective racks.- a i I 2. A device of the character described comprising a frame, a bed movable longitudinally of said frame, a pair of racks ar ranged on the under face of said bed, said racks being parallel one to the other and having their adjacent ends staggered, a pair of short racks mounted in alinement one with the other and offset with respect to the first mentioned racks, a power shaft arranged transversely of the frame, a driving pinion carried upon the power shaft, a second shaft mounted in the frame and parallel to the power shaft, a sleeve surrounding the second mentioned shaft, said sleeve being eccentric with respect, thereto, a gear carried by said sleeve, an idle pinion engaging said gear and the pinion of the power shaft to reverse the drive of said gear, a gear carried by the second mentioned shaft and meshing with the pinion of the power shaft and with one of the racks on', the under face of the bed, the gear carried'by the sleeve being adapted to .mesh with the other of said racks, means for alternately engaging said gears with their respective racks, and an oscillatingarcuate rack adapted to alternately engage the offset short racks to move the table at the interval when the gears are meshing and unmeshi'ng with their respective racks;

" ANDEBS ANDERSON. 

